1.

Assertion : Atomicity of oxygen is 2. Reason : 1 mole of an element contains 6.023xx10^(23) atoms.

Answer»

If both ASSERTION and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If the assertion and reason both are false.

Solution :No. of ATOMS present in a molecules of a GASEOUS element is called atomicity.
For EXAMPLE, `O_(2)` has two atoms and hence its atomicity is 2.


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